Trouble oneboxing - 429 error

Still getting this oneboxing 429 error. How can I troubleshoot this on my local installation? Is there a more verbose or detailed onebox log I can enable for study?

Thank you

Sorry, we were unable to generate a preview for this web page, because the web server returned an error code of 429. Instead of a preview, only a link will appear in your post. cry

example URL: https://archive.is/1nePs

That url doesn’t generate a one box here or on try.discourse.org, so I’m not clear that there is a problem on your test box.

But if there is, it sounds like a connectivity issue.

I know, I didn’t mean I thought there was a problem locally. I meant I would like to debug the code or find out what Onebox is doing wrong.

But really, I’d like to be able to override the “Discourse” User Agent since I suspect that’s what’s getting blocked…